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Josyp
Bilyj
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Website
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Specialization
Full Stack
Hourly rate
$50/hr
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About me
I am a Senior Full Stack Engineer. I have been working as a Software Engineer for over 6 years and have developed many projects according to clients' needs and published many applications to production. Self-motivated expert with a solid work ethic and a productive self-starter, which alongside my aptitude for learning, keeps me updated. I am an ambitious man with rich experience. As an expert problem solver, responsive to client needs, and detail-oriented,  I have a proven track record of consistently providing high levels of customer satisfaction. Always looking for new solutions and new challenges, new experiences.

Work experience

PAYPER WIN. INC
January 2021 – Current time
Job title
LEAD ENGINEER,
Work experience & achievements

My key responsibilities were: • Lead the dev team to build project and followed the agile software development process. • Introduced Peer to Peer logic and implemented it in sports betting. • Design the system architecture and make technical decisions. • Develop and maintain stable betting platform. • Cooperated with 3 developers from worldwide. My key contributions are: • Developed high quality and user friendly web application. • Built multi language (i18n) site for global users. • Integrated several 3rd party services for calculating odds and payment process. • Built Smart Contracts for payment system. • Optimize the code to easy to scale and maintain Technology used: • React, Redux, Node, Express, MongoDB, Solidity, Web3

JOINEDAPP
June 2019 – December 2020
Job title
SENIOR WEB3 FRONTEND ENGNEER
Work experience & achievements

My key responsibilities were: • Collaborated with product and designed teams to iterate on the design and implementation of the current product and build new features. • Worked with back-end team in definition, architecture and code implementation. • Developed libraries and abstractions to help platform performance and maintainability. My key contributions are: • Develop and maintain stable and optimized frontend application. • Integrated web3 for interacting with smart contracts. • Built internationalization (i18n) sites for global users. Technology used: • React, Redux, Web3, Solidity

ARTEZIO
July 2017 – May 2019
Job title
FULLSTACK ENGINEER
Work experience & achievements

My key responsibilities were: • Develop performant and optimized web applications. • Build and upgrade internal tools and libraries to improve developer experience. • Advocate new technologies and best practices within the team. My key contributions are: • Built a rich set of development tools to improve developer experience (DX), such as chrome extension, cli tools. • Set up performance metrics monitoring platform. • Upgraded React 16 and migrated legacy code. • Optimized webpack bundle size to reduce load time. Technology used: • React, Redux, Flow Type, webpack, Jest, puppeteer, Node / Express

Education

Hellenic American University
Graduation year: 2016
Level of study
Bachelor
Major / Field of study
Science in Informatics